2 results about "Total efficiency" patented technology

The present discloses a radioactivity activity transfer and measuring device and belongs to the radioactivity activity measurement field. The device comprises a shielding chamber, a detector, a supporting table and a reference source; the detector is disposed in the shielding chamber; the detector is a scintillation detector composed of a well type NaI (Tl) crystal; the supporting table is used for supporting the shielding chamber; and the reference source is arranged within the detector. A radioactivity activity measuring method includes the following steps of: a, the radioactivity activity measuring device is turned on and warmed up, and the resolution of the detector is checked; b, energy calibration is performed on the detector; c, a background energy spectrum is measured; d, the energy spectrum of a sample to be tested is measured; e, the full spectrum count rate of the sample is read, so that the net count rate n of the sample is obtained; f, the net count rate n of the sample tobe tested and total efficiency are substituted into a formula A=n / epsilonT; and g, the activity A of the sample to be tested is calculated. The portable radioactivity activity transfer and measuringdevice and measuring method of the invention have the advantages of small size and light weight.

The invention relates to the field of pesticides, in particular to a composition for treating brown spot of kiwifruits. The composition comprises, by weight, 20-30 parts of spica prunellae, 6-9 partsof herba schizonepetae, 10-20 parts of herba moslae, 8-12 parts of catechu, 10-20 parts of actinidia chinensis planch, 6-9 parts of herba polygoni chinensis, 8-12 parts of leaves of eucalyptus robusta, 10-20 parts of herba inulae, 15-25 parts of shrubby breynia, 2-4 parts of fructus viticis, 12-18 parts of elatostema stewardii, 8-12 parts of herba spirodelae and 8-12 parts of compound bacteria. The composition has the advantages that obvious effects of treating the brown spot of the kiwifruits can be realized by the treatment composition, the average total efficiency rate is higher than 96%, the average total cure rate is higher than 93%, kiwifruit brown spot morbidity conditions can be effectively controlled, the shortcomings due to the traditional medicine treatment can be overcome by the aid of the composition, and medicine residues in the kiwifruits can be reduced.